Sewing-machine.



A. R. SCHOENKY.

SEWlNG MACHlNE.

APPLlcMmN FILED 1AN.1,1913.

1,137,356. Patented Apr. 27, 1915.

| 7% 747, fjCKMU/wz UNITED STATES PATENT OFFICE.

AUGUST R. SCHOENKY, OF SOMERVILLE, MASSACHUSETTS, ASSIGNOR T THE REECE SHOE MACHINERY COMPANY, OF BOSTON, MASSACHUSETTS, A CORPORATION OF MAINE.

Specification of Letters Patent.

Original application filed September 25, 1912, Serial N o. 722,300. Divided and this application 4filed January 7, 1913. y serial No. 740,640.1.

T0 all whom itmay concern Be it known that LAUGUST R. SoHoENnr, a citizen of the Unitedv States, residing at Somerville, in the county of Middlesex and State of Massachusetts, have invented cer.

tain new and useful Improvements in SewingMachines, of which the following is a specification, reference being had therein to the accompanying drawing.

My invention relates to sewing machines land more particularly to that class of ma- ;flchines employing a rotary shuttle carrying -f-a bobbin, in which is a supply of thread `'adapted to be linterlocked"with a second thread in vthe operation ofthe-sewing machine.

' improvement toifa lock stitch -sewing ma-v chine of the typemployed in the manufac- "f Specifically, I; have appliedfthel present ture of shoes bythe weltlsystem,wherein the out sole and the welt are sewed together.

The substantial details ofsuch a sole sewing machineare vfully disclosed my prior application, Serial Na 722,300, filed September 25, 1912,*ofwhich the present application' is afdivision, Aand reference may be made to said prior application for, details not illustrated herein.' y Y It isv an object hereofto provide a'novel and improved bobbin retainer and operating I v mechanism, whereb'yth'e shuttle-box may oe lwith great 'convenience and "facility opened and shutfor the removal'andreplacement of bobbins. l

- other Objects anadvantages' pertaining tothe present invention .will appear in vthe* hereinafter following `description or Awill be l apparent to those 'skilled-'in the art.

`To the attainment of such objects and `advantages, the present inventionconslsts 1n Ithe 'novel combinations, arrangements-devices, and' parts set forth, described and illustrated in thel following description 'and accompanying drawings.

:I-will irst'describe one form of machine "embodying my improvements and lwill thereafter point out the novel features in the' brokenfaway, l"showing vthe shuttle case, -lfs'hlialaie bobbin.. retainer... .and ee claims.

yIn theaccompanying-drawngsforming a @partlht'refaof,'Figure'1 is` a front view, partly* tainer operating mechanism. Fig. 2 is'atop view partly in section upon the plane 15-15 of Fig. 1.

Similar lines and references designate corresponding parts in therseveral figures of the drawing.

`Without attempting an description of the general construction o the machine, or details not involved in the present improvement,\I vcall attention that those details may ybe as in my aforesaid prior application, or of any other description. The upper thread l.from the bobbin hereof will be understood to be interlocked with an under thread properly manipulated 4by any suitable mecha- The shuttle case A10--wil1 vas usual be eml ployed'and this may be' of the ordinary form as indicated, having asomewhat enlarged casting or body, to the front of which 'is secured the shuttle retainer 11in the usual form of a ring, serving to confine Within the case the shuttle 12 which encompasses thebobbin 13, the latter retained inplace by the device or retainer 14. The shuttle-may be driven in a rotary manner by any suitable retainer when closed and means,'a's. a spring,

for throwingit open when unlocked. There lis also a manual part movable at will for. `causing the unlocking and* therebyl the -throwing openof the` retainer, the parts being so' constructed or' designed that the 4locking v device is -held inoperativev when' the retainer isf-open# so that the lattermay at any time be,' n10ved by simplypushn -v toward ne hand Patented Apr. 27', 1915.V

therefore servesorreleasing and opening.'

when .desired, -and'one handema close and for accomplishing ends may be as follows: The retainer 14 is shown at the end of a carrying arm 142, which is pivoted to a stud or bolt 143, (see Figs. 1 and'2). A coil spring 144 is so secured at its inner and outer ends respectively to the bolt 143 and the arm 142 as to tend to throw the latter wide open. 'When the retainer 14 is closed upon the bobbin, it is positively held there by the extension 145 of the arm 142, said extension having a tapered aperture 146, adapted to be engaged by a tapered pin 147, vertically mounted in part of the shuttle case 10. A spring 148 tends to throw downwardly the pin 147 so as to Wedge it into the recess 146, for securely and rigidly locking the bobbin retainer in closed position.v

To unlock the bobbin retainer, and at the same time to'open it, I have provided the coil spring 144, before referred to, and also an opening part or rod 149,-having an accessible knob or handle shown at the top thereof. The rod 149 has lateral teeth 150 at one side, engaging a pinion 151 mounted in the shuttle case,- such pinion engagin teeth 152 on the locking bolt 147.` With such mechanism, if the operator depresses the rod .149, the bolt 147 is lifted and the spring 144 causes the bobbin retainer to swing completely open. To determine 'the limit of opening, a stop 153 may be located substantially as shownwhich will contact the body of the shuttle case, as indicated in the dotted line position of-Fig. 2.

It will be noticed that the carrying arm 142 has a flat upper surfacev of arc shape or form, .so that during the swinging from the full'line to the dotted line-,position the bolt 147 is upheld or prevented from descending under the influence of spring 148. The result of this arrangement is Athat after the operator has opened the retainer by a mere pressure of the rod 149, he is 'easily enabled at will to close the retainer 'Without operation of the rod 149, but merely by pushing the retainer to swing it. shut. The bolt147 slides around-the upper surface of the arm 142, until it drops into the aperture 146, to positively lock the retainer in closed position.

I have thus described a mechanism which attains the advantages and objects hereinbefore recited. Since it `is manifest that various parts, features and combinations may be modified in form or operation With-l out departing from theprinciples ofthe invention, I do not wish to beV limited to any specific features, arrangements, parts or other details, excepting 'in so far as the same are referred to inthe appended claims. Y What I claim and desireto secure by Letters Patent-is:V A v 1. In a sewingV machine the combination of a shu'ttle adapted to contain a bobbin, a

movable bobbin retainer 'adapted when Ain -cated wholly .V Y gage from abovethe'aperture in said plate -to positively lock the retainer in closed posiclosed 'position to retain a bobbinin said shuttle', an apertured plate movable with said retainer, a locking bolt adapted to engage the aperture in said plate to positively lock the retainer in closed position, and means, including a single controller or handle, operable at will for disengaging said bolt and plate and permitting the moving of the retainer into open position, and a means other than said controller for movingopen the retainer, said bolt and `aperture being so relatively formed as to readily\en gage upon closing the retainer and so constructed not only to lock the retainer against opening movement but to afford a stop to the closing movement.

2. In a sewing machine the combination of a shuttle adapted to contain a bobbin, a horizontally Swingin bobbin retainer adapted when in close position to retain a bobbin in said shuttle, an apertured plate horizontally movable with `said retainer, a self-descending locking bolt above said plate adapted to engage from above the aperture in said plate to positively lock the retainer in closed position, a single control kling handle having connections for disengaging said bolt and plate such that the bolt is moved upward by a suitably convenient motion of the handle, and means acting automatically upon the operation of the handle for swinging the retainer open.

3. In a sewing machine the combination of a shuttle adapted to contain a bobbin, a horizontally Swingin bobbin retainer adapted whenv in close position to retain a "bobbin in said shuttle, an apertured plate 4. In a sewing machine the combination i of a shuttle adapted to contain a bobbin, a horizontally Swingin bobbin retainer adapted when -in close position to retain a bobbin in said shuttle, an apertured tplatehorizontally and-j-rigidly movable with said retainer, a-#sel desenling-locking bolt lotion, a single controlling handle above said plate, and having connections for dis'enf Y gaging said bqlt and .platsirehihat the bolt` is moved upward b" a. suitably convenientv motion of the han e, a flat bottomed fixed frame part directly above said plate, and In testimony whereof I alix my signature against which the plate swings in direct face in presence of two witnesses.

contact, and in which the pivot of swinging AUCUST R SCHOENKY is located, the plate and frame part cor1- X structed With a central recess, and a. spiral Nit-messes:

spring within said recess adapted to swing JAY WARREN NICHOLS,

the retainer open when unlocked. THOMAS J. CARTY. 

